# How do you solve \frac { 28} { 42} = x/6?

Feb 6, 2018

Use the cross-products property.

#### Explanation:

For proportion $\frac{a}{b} = \frac{c}{d}$, $a \cdot d = b \cdot c$.

To solve your proportion, $\frac{28}{42} = \frac{x}{6}$, we can use the cross products property to restate the problem:

$28 \cdot 6 = 42 \cdot x$

therefore

$168 = 42 x$

and by dividing both sides by 42,

$4 = x$